CollectionSourceBase.EmptyCollectionCriteria Field

Returns a CriteriaOperator that represents a criterion that can never be satisfied. If you add this Criteria Operator to a Collection Source’s CollectionSourceBase.Criteria dictionary, the Collection Source’s CollectionSourceBase.Collection will contain no objects at all.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v25.2.dll

NuGet Package: DevExpress.ExpressApp

Declaration

C#

public static CriteriaOperator EmptyCollectionCriteria

VB.NET

Public Shared EmptyCollectionCriteria As CriteriaOperator

Field Value

Type
CriteriaOperator

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the EmptyCollectionCriteria field.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

XAF_how-to-show-filter-dialog-before-listview/CS/EFCore/DialogBeforeListViewEF/DialogBeforeListViewEF.Module/Controllers/ShowFilterDialogController.cs#L20

showFilterDialogAction.Active[DisableReason] = true;
View.CollectionSource.Criteria[nameof(ShowFilterDialogController)] = CollectionSourceBase.EmptyCollectionCriteria;
ShowFilterDialogOnActivated();